In the daily operation of Sock Knitting Machine, needle jam is a common fault that seriously affects production continuity. Timely and effective solution to this problem is essential to ensure production efficiency and product quality. The causes of needle jam are complex and usually involve multiple factors, including decreased elasticity of needle spring, deformation of needle hole, impurity blockage, dust accumulation on needle bed, unreasonable or damaged needle design, failure of needle control system, and abnormal thread material. Taking corresponding solutions for different causes of failure can effectively alleviate or even eliminate the needle jam problem, thereby ensuring the normal operation of the equipment.
The decrease in elasticity of needle spring is one of the main causes of needle jam. After long-term use, the needle spring may lose its elasticity due to fatigue, which in turn affects the normal movement of the needle and causes the occurrence of needle jam. In order to solve this problem, the needle spring needs to be fully inspected first and replaced with a new needle spring with good elasticity if necessary. During the replacement process, be sure to select high-quality needle springs that meet the equipment specifications to ensure their elasticity and durability. In addition, the installation of the needle spring needs to ensure that it is tightened in place to avoid abnormal movement caused by looseness.
The deformation or dust accumulation of the needle hole is also an important factor causing needle jam. As the equipment is used for a longer time, the pinhole may be deformed, cracked, or accumulate a large amount of fiber and dust impurities, which will hinder the normal movement of the needle. Therefore, it is particularly important to clean the pinhole regularly. Using a fine brush or compressed air can effectively remove impurities in the pinhole and prevent the pin from being stuck due to the accumulation of impurities. For severely deformed pinholes, it is recommended to use special tools to correct them to restore their original shape and ensure the free movement of the needle. In extreme cases, it may be necessary to replace the severely deformed pinhole or needle bed part to restore the normal performance of the equipment.
Impurity blockage is another common cause of needle jams, especially when using fine fibers or wires with more impurities. Impurities in the wire are easily stuck in the pinhole or needle control system, causing the needle to be unable to move normally. For this reason, the screening and cleaning of the wire is very important to ensure that the wire used is pure and meets the quality standards. In the process of supplying wire, the filtering and cleaning links should be strengthened to reduce the possibility of impurities entering the equipment. At the same time, during the operation, the tension of the wire needs to be reasonably adjusted to avoid the problem of needle jams caused by the wire being too loose or too tight.
Failure of the needle control system is also one of the important reasons for needle jams, especially in electronic control systems, which often manifests as uncoordinated or unresponsive needle movement. This type of failure is usually caused by sensor failure, driver damage, or control program errors. To address this problem, it is necessary to conduct a comprehensive inspection of the electronic components to confirm whether the sensor sensitivity and response are normal, whether the driver is working properly, and whether there is a fault in the control software. For faulty electronic components, the damaged parts should be replaced in time, and the control program should be upgraded or recalibrated to ensure the stability and response speed of the system. In addition, regular maintenance and inspection of electronic control systems can effectively prevent the occurrence of potential failures.
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